Ferrite Phase Shifter Thermal Management via Waveguide Contact
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ferrite phase shifters experience heat accumulation and temperature rise due to increased loss at high voltage inputs, leading to degraded performance, as the heat is not released smoothly due to the ferrite being secured through spacers.
Innovation Solution
The ferrite phase shifter design features sheet-like ferrites in tight contact with the waveguide walls, allowing for efficient heat dissipation, along with dielectric layers and yokes to enhance electromagnetic field intensity and reduce current requirements, and includes features like holes and slits to manage high frequency waves and magnetic fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the ferrite is secured through spacers, then the ferrite can be held in position, but heat is not released smoothly and temperature increases
Solution Approach 1:
The invention removes the spacers that were previously used to secure the ferrite in position. By taking out the spacers, the ferrite can be in direct contact with the waveguide walls, enabling efficient heat dissipation through the waveguide structure while still maintaining positional stability through direct wall contact.
2Productivity
If voltage input is increased, then phase change rate improves, but heat generation increases and performance degrades
Solution Approach 1:
The invention converts the harmful heat generated by high voltage operation into a beneficial cooling mechanism. By allowing direct thermal contact between the ferrite and the waveguide walls, the previously harmful heat becomes useful for maintaining ferrite temperature control, enabling high power operation without performance degradation.
3Temperature
If ferrite is in tight contact with waveguide walls, then heat dissipation improves, but manufacturing precision requirements increase
Solution Approach 1:
The waveguide walls serve multiple functions: they guide the electromagnetic wave and simultaneously act as heat sinks for dissipating heat from the ferrite. This multi-functionality eliminates the need for separate positioning structures like spacers, reducing manufacturing precision requirements while improving thermal management.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design stabilizes the ferrite phase shifter's performance at high power levels by suppressing temperature rise, preventing thermal stress, and improving phase change rates while reducing current and coil turns, achieving high cooling efficiency and maintaining ferrite characteristics.
Implementation Method 1
A current is passed through the coil 102 from the outside of the rectangular waveguide 101 to generate a magnetic field
Implementation Method 2
substantially sheet-like ferrites disposed to face each other with respective mounting surfaces thereof kept in tight contact with inner walls of wide surfaces of the rectangular waveguide facing each other
Data Source
AI summary
In a ferrite phase shifter, a temperature rise at ferrites can be suppressed to maintain the characteristics of the frites even when used at high power. Thus, the phase shifter can stably demonstrate high performance. The ferrite phase shifter includes a rectangular waveguide, substantially sheet-like ferrites disposed to face each other with respective mounting surfaces kept in tight contact with inner walls of wide surfaces of the rectangular waveguide facing each other, and a coil which is wound around the periphery of the rectangular waveguide in a position substantially corresponding to the position of the ferrites and through which a current is passed.